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Commit 3f9c10b0 authored by Amit Shah's avatar Amit Shah Committed by Rusty Russell
Browse files

virtio: net: Move vq initialization into separate function 



The probe and PM restore functions will share this code.

Signed-off-by: default avatarAmit Shah <amit.shah@redhat.com>
Signed-off-by: default avatarRusty Russell <rusty@rustcorp.com.au>
parent f8fb5bc2

drivers/net/virtio_net.c

+28 −19
Original line number Diff line number Diff line
@@ -985,15 +985,38 @@ static void virtnet_config_changed(struct virtio_device *vdev) 
	virtnet_update_status(vi);

}



static int init_vqs(struct virtnet_info *vi)

{

	struct virtqueue *vqs[3];

	vq_callback_t *callbacks[] = { skb_recv_done, skb_xmit_done, NULL};

	const char *names[] = { "input", "output", "control" };

	int nvqs, err;



	/* We expect two virtqueues, receive then send,

	 * and optionally control. */

	nvqs = virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ) ? 3 : 2;



	err = vi->vdev->config->find_vqs(vi->vdev, nvqs, vqs, callbacks, names);

	if (err)

		return err;



	vi->rvq = vqs[0];

	vi->svq = vqs[1];



	if (virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ)) {

		vi->cvq = vqs[2];



		if (virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VLAN))

			vi->dev->features |= NETIF_F_HW_VLAN_FILTER;

	}

	return 0;

}



static int virtnet_probe(struct virtio_device *vdev)

{

	int err;

	struct net_device *dev;

	struct virtnet_info *vi;

	struct virtqueue *vqs[3];

	vq_callback_t *callbacks[] = { skb_recv_done, skb_xmit_done, NULL};

	const char *names[] = { "input", "output", "control" };

	int nvqs;



	/* Allocate ourselves a network device with room for our info */

	dev = alloc_etherdev(sizeof(struct virtnet_info));
@@ -1065,24 +1088,10 @@ static int virtnet_probe(struct virtio_device *vdev) 
	if (virtio_has_feature(vdev, VIRTIO_NET_F_MRG_RXBUF))

		vi->mergeable_rx_bufs = true;



	/* We expect two virtqueues, receive then send,

	 * and optionally control. */

	nvqs = virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ) ? 3 : 2;



	err = vdev->config->find_vqs(vdev, nvqs, vqs, callbacks, names);

	err = init_vqs(vi);

	if (err)

		goto free_stats;



	vi->rvq = vqs[0];

	vi->svq = vqs[1];



	if (virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VQ)) {

		vi->cvq = vqs[2];



		if (virtio_has_feature(vi->vdev, VIRTIO_NET_F_CTRL_VLAN))

			dev->features |= NETIF_F_HW_VLAN_FILTER;

	}



	err = register_netdev(dev);

	if (err) {

		pr_debug("virtio_net: registering device failed\n");